Advertisements
Advertisements
Question
Which pollutant released into the air during refrigeration and airconditioning is the greatest contributor to the depletion of ozone layer?
(a) BHC
(b) DDT
(c) CFC
(d) UNEP
Advertisements
Solution
CFC
Chlorofluorocarbons (CFCs) are released into the air during refrigeration and air conditioning and are the greatest contributor to the depletion of the ozone layer.
APPEARS IN
RELATED QUESTIONS
What is the function of ozone in the upper atmosphere?
How does ozone affect any ecosystem?
Why is damage to the ozone layer a cause for concern? What steps are being taken to limit this damage?
The prime source of chlorofluorocarbons is ______.
Name the group of chemical compounds which damages the ozone layer.
What is ozone?
The depletion of ozone layer in the upper atmosphere is mainly due to the emission of :
(a) unburnt hydrocarbons
(b) chlorofluorocarbons
(c) greenhouse gases
(d) ultraviolet radiations
“Damage to the ozone layer is a cause of concern”. Justify this statement.
Briefly explain depletion of ozone layer and its effects.
Explain what is smog. Give its effects.
Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?
True or False:
Ozone in the Troposphere is a harmful pollutant.
Give balanced equations for formation of ozone molecules from oxygen molecules. What type of reaction takes place, during the formation.
State the role of chlorofluorocarbons in ozone destruction or depletion [no equations required].
State how CFCs break ozone in the stratosphere.
Name or state the following:
The atom which reacts with oxygen to form ozone.
Which of the following radiations is responsible for the conversion of atmospheric oxygen to ozone?
Depletion of ozone is mainly due to
World Ozone day is celebrated on ______.
What is exactly measured in Dobson units or DU?
